@article{DAN_1980_250_5_a5,
     author = {A. V. Kostin and G. A. Stoikova},
     title = {Asymptotic representation of solutions of a linear differential equation of $n$-th order},
     journal = {Doklady Akademii Nauk},
     pages = {1050--1053},
     publisher = {mathdoc},
     volume = {250},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_250_5_a5/}
}